Improvement in preparing camphor



UNITED STATES PATENT OFFICE.

v'WILLIAllIF. SIMES, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN PREPARING QAMPHOR.

Specification forming part of Letters Patent No. 136,623, dated March II, 1873.

To all whom it may concern:

Be it known that I, WILLIAM F. Sums, of Philadelphia, Pennsylvania, have invented a process for preparing the distilled or refined camphor of commerce for medicinal purposes, as well as for preserving furs, woolens and other articles from destruction by moths and other insects, of which the following is a specification: A.

Letters Patent, No. 127,807 were issued to me June 11, 1872, for a process of preparing the crude or unrefined camphor by compressing the same into cakes, blocks or tablets,

and for the camphor so prepared as a new arapplicable to crude camphor.

The cakes, blocks or tablets of refined camphor, owing to their compactness, have advantages over the refined camphor of com merce in the large saving from evaporation, andin the saving from the waste incidental to handling, and also in great] yv facilitating the dispensation, packing, and"'shipment of the drug.

The refined camphor thus prepared in blocks may of course be employed for preserving furs, 850; but for these nsesIprefer the article of prepared crude camphor described in my said patent.

I claim-- As a new article of manufacture, cakes,

blocks, or tablets of distilled or refined camphor, formed by pressure, for medicinal and other uses as set forth.

WM. E. MOORE, W. W. DoUcnE'R'rY. 

